Retrovirus is now available in an inexpensive mass market paperback edition! Nicholas Donovan is a brilliant genetic researcher with little time for God. He's also damaged goods-and knows it-because one of his patients died in clinical trials for a cancer therapy. So why would SynTech Labs be eager to hire the disgraced doctor? Donovan's not sure-but he's not asking questions. Now, as the new head researcher on SynTech Labs' latest gene therapy, Nick is surprised to learn how many Christians are scheduled for injections. When he discovers a stockpile of fatal gene therapies, questions flow. Can he investigate without wrecking his career. . .and perhaps uncover the soul he didn't know he had?